Improved tool for cutting off stay and other bolts



z van for:

Wn @we s:

Maf(

NA PETERS, FHOTO-LITHOGHAPHER, WASHINGTON, D i)4 UNITED STATES PATENT OEEICE.

JOSEPH RENSHAIV, OF MICHIGAN CITY, INDIANA.

IMPROVED TOOL FOR CUTTING OFF STAY AND lOTHER BOLTS.

Specification forming part 0f Letters Patent No. 46,103, datcd March 7, 1865.

.To all whom it may con/cern:

Be it known that l, J osEriI RENsnAW, of Michigan City, in the couutyof La Porte and State of Indiana, have invented a new and useful Improvement in Machines or Tools for Cutting off 'Stay and other Bolts; and I do hereby declare thatthe following is a full,

clear, and exact description thereof, which will enable others skilled in the art to make and use the same, reference being had to the accompanying drawings, forming part of this' specification, in which- Figure l represents a sectional elevation of my cutter through its axis, a portion of a rebox of a steam-boiler being shown, on which the Vtool is supposed to be employed. Fig. 2 is' a plan of a section on a horizontal line through the ratchet-wheel and the axis of the handle. Fig. 3 is a plan view of the tool. j

Similar letters of reference indicate .like parts. j

rIhe numerous stay-bolts in the tire-box sheets of steam-boilers are usually cut oi' after their ends are screwed to their proper place bya cold-chisel and hammer. This method of cutting them oftl is slow and expensive work, and the rest of the bolt is usually injured by reason of the jamming of the threads, so as to require trimming before it can be again inserted in the sheets. Besides this, that portion of the bolt which enters the sheets and the sheets themselves are subjected to inj urious strains by the old method, owing to the successive and violent blows of the workman in cutting off the bolt, and the bolts are thereby often loosened in their holes and the holes altered in their outline, whereby it becomes necessary in riveting them upon the sheets to subject the bolts to an excessive amount of hammering, which is injurious to them.

ous tendencies and the disadvantages of the present mode of doing this sort of work.

In the drawings, A represents a section of a portion of a tire-sheet with my cutting-tool D applied thereto, and a bolt, B, about being cut otf by it. 'lhe tool is composed of an annular stock, I, whose base is to rest upon or over the tire-box sheet, and whose sides are slotted, as shown in dotted outline in Fig. 2,

and in .thc sectional Fig. l, to receive a cutting-tool, a, which is passed through the slot,

so that its cuttingedge shall project within the hollow part of the stock I, the head of the cutter being pivoted in the side of the stock lat c', about which point it moves as about a center. The slot at the other sideof the stock is lengthened, as shown in Fig. 2, so as to allow the cutting-edge to be advanced to the axial'line of the stock upon being forced up by the bearing-screw s2, which passes through the side of the stock and presses against the back of the cutter opposite its cutting-edge. The stock is turned down above a line, 4, on its circumference, so that the lower ring d of la handle, H, which embraces the stock, shall.

have a bearing thereon in its rotation. *'Ihe handle II is forked or slotted between its rings d, in order to expose a ratchet-wheel, e, cut upon the circumference of the stock between the faces of the rings. A slot, S, is formed in the shank of the handle H between the rings, in which is set a pawl, I), upon whose shank is a spiral spring, which is held between a shoulder on the shank of thel pawl and the bottom ofthe slot. A stop, S, is formed on the pawl near its outer end, which limits a shoulder, 3, which receives a shoulder, 2,l

formed on the outside of an annular clasp or claspsleeve, J, which is'to; be inserted within the stock from below untill its shoulder abuts against the shoulder ot' the stock, in which position it is secured by the upper side of the cutter a. as shown in Fig. 1.-' My invention provides against these injuri- The upper part of the sleevjeis thinner above its shoulder 2 than at .thepart below by the depth of the shoulder, and it is slotted down its opposite sides at h, so as to 'be capable of compression at its upper part.

The stock I rises to a height slightly above the `upper edge of 'the upperring d of the handle to reccivepa ring or washer, NV, which rests upon the upper ring d ofthe handle and is ilush with-the upper edge of the stock. A securing ring, It, tits around the top of the sleeve J and rests upon the top of the stock I `and upon the inner edge of the ring or. washer W, so as to confine the latter in its place. A set-screw, s', passingg,` through the ring R, not only secures the several parts of the machine together, but also compresses the sides of the sleeve, so that when the tool is passed over a bolt, B, which is to be cut oft it is made to clasp it securely 4by turning the screw s. When so secured to the bolt, the operation of cutting it oi is ready to be proceeded with.

By removing the claspsleeveJ and substitutinganother whose inner diameter is greater or less the same stock and its attachments can be used for cutting off bolts of'difterent sizes.

The bolt., after bein g cut oi' by my machine, isleft trimmed in good condition for entering thesheets again,the threads of its screw being uninjured and as lathe.

My machine or tool can be applied to cutting any other bolts or` screws over which it can be set or to which it can be secured.

I claim as new and desire to secure by Letters Patent- 1. The clasp-sleeve for holding the tool to the bolt. to be cut, constructed substantially as described.

2. The combination of the clasp sleeve and the stock I, substantially as described.

JOSEPH RENSHAW.

perfect as when it left tl-.e

Witnesses DAN KENNEDY,. P. DoRAN. 

